(a) A spring exerts a force of 0.5 N when stretched 0.25 m beyond its natural length. Assuming that Hooke’s law applies, how much work was performed in stretching the spring to this length? (b) How far beyond its natural length can the spring be stretched with 25 J of work?
(a) A spring exerts a force of 0.5 N when stretched 0.25 m beyond its natural length. Assuming that Hooke’s law applies, how much work was performed in stretching the spring to this length? (b) How far beyond its natural length can the spring be stretched with 25 J of work?
(a) A spring exerts a force of
0.5
N
when stretched
0.25
m
beyond its natural length. Assuming that Hooke’s law applies, how much work was performed in stretching the spring to this length?
(b) How far beyond its natural length can the spring be stretched with
25
J
of work?
4
In the integral dxf1dy (7)², make the change of variables x = ½(r− s), y = ½(r + s), and
evaluate the integral. Hint: Find the limits on r and s by sketching the area of integration in the (x, y) plane along
with the r and s axes, and then show that the same area can be covered by s from 0 to r and r from 0 to 1.
7. What are all values of 0, for 0≤0<2л, where 2 sin² 0=-sin?
-
5π
6
π
(A) 0, л,
and
6
7π
(B) 0,л,
11π
, and
6
6
π 3π π
(C)
5π
2 2 3
, and
π 3π 2π
(D)
2' 2'3
, and
3
4元
3
1
די
}
I
-2m
3
1
-3
บ
1
#
1
I
3#
3m
8. The graph of g is shown above. Which of the following is an expression for g(x)?
(A) 1+ tan(x)
(B) 1-tan (x)
(C) 1-tan (2x)
(D) 1-tan
+
X
-
9. The function j is given by j(x)=2(sin x)(cos x)-cos x. Solve j(x) = 0 for values of x in the interval
Quiz A: Topic 3.10
Trigonometric Equations and Inequalities
Created by Bryan Passwater
can you solve this question using the right triangle method and explain the steps used along the way
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